MCQs4All - Biology Collection

Biology MCQs for NTS, FPSC, CSS, PPSC, PMS, UTS, FTS, OTS, Teaching, CT, PTC, SST, B.Ed, M.Ed of past papers

Question. “lubb” sound is produced due to___________________?
  1. Opening of inlet valve
  2. Closure of inlet valve
  3. Opening of outlet valve
  4. Closure of outlet valve
Question. How many vertebrae are present in thoracic region?
  1. 7
  2. 12
  3. 5
  4. 4
Question. Types of behaviour enabling pillbugs to reach moist area is___________?
  1. Kinesis
  2. Taxes
  3. Instinct
  4. Learning
Question. A disease of longs in which inside of the lungs is damaged resulting in cough and fever?
  1. Lung cancer
  2. Asthma
  3. Emphysema
  4. Pulmonary tuberculosis
Question. Which of the following statement is incorrect about Glyoxisomes?
  1. They contain enzymes which help in conversion of fatty acids into carbohydrate
  2. They are abundant in soyabeans but absent in pea.
  3. They are present through out life of a plant and provide them whth energy through Glyoxylate cycle.
  4. They are signle membranous organelles
Question. Which of the following is used in brewing industry to promote malting_______________?
  1. Gibberellins
  2. Cytokinins
  3. Auxins
  4. Abscisic Acid
Question. Which of the following are motile zooids in cnidarians?
  1. Polyps
  2. Medusae
  3. Both of these
  4. None of these
Question. On average there are _______ or more thylakoid per granum?
  1. 60
  2. 50
  3. 40
  4. 70
Question. Incomplete or imperfect digestion is known as________?
  1. Obesity
  2. Dyspepsia
  3. Anorexia nervous
  4. Bulimia nervosa
Question. Which of the following is most toxic?
  1. Ammonia
  2. Urea
  3. Uric acid
  4. Trimethylamine oxide
Question. Which one of the following is avascular structure?
  1. A compact bone.
  2. A spongy bone.
  3. Cartilage
  4. All of these
Question. It is possible to date the rocks by comparing the amount of specific radioactive isotopes they contain. Which of the statement is correct in this respect?
  1. Older sediment layers have equal amount of these radioactive isotopes as that of the young ones
  2. Older sediment layers have less amount of these radioactive isotopes as that of the young ones.
  3. Older sediment layers have greater amount of these radioactive isotopes as that of the young ones.
  4. Older sediment layers did not have these radioactive isotopes
Question. which of the following gas discovered by Scheele?
  1. chlorine
  2. hydrogen
  3. oxygen
  4. carbon dioxide